Castro is the father of Berry's 6-year-old daughter.
All three women kept diaries with Castro's permission, providing many of the details of their abuse.
"I cried every night. I was so alone. I worried what would happen to me and the other girls every day," Knight, 32, said, as she addressed her abductor head-on during his sentencing. "I will live on. You will die a little every day."